Umkhathi we-Sintering ku-MIM

Umkhathi ngesikhathi senqubo ye-sintering uyiphuzu eliyinhloko lobuchwepheshe be-MIM, bunquma umphumela wokukhipha kanye nokusebenza kokugcina kwemikhiqizo.Namuhla, sizokhuluma ngakho, i-Atmosphere of Sintering.

Iqhaza le-sintering atmosphere:

1) Dewaxing zone, susa okokugcoba emzimbeni oluhlaza;

2) Nciphisa ama-oxide futhi uvimbele i-oxidation;

3) Gwema ukukhishwa kwe-carburization yomkhiqizo kanye ne-carburization;

4) Gwema i-oxidation yemikhiqizo endaweni yokupholisa;

I-5) Gcina ingcindezi enhle esithandweni somlilo;

I-6) Gcina ukuhambisana kwemiphumela yokucula.

Ukuhlukaniswa kwe-sintering atmosphere:

1) Umkhathi we-oxidizing: I-Ag ehlanzekile noma i-Ag-oxide eyinhlanganisela yezinto kanye ne-sintering ye-oxide ceramics: Umoya;

2) Umkhathi wokunciphisa: I-Sintering atmosphere equkethe izingxenye ze-H2 noma ze-CO: Umkhathi we-Hydrogen we-sintering ye-carbide enosimende, umoya oqukethe i-Hydrogen wezingxenye zensimbi ezisekelwe ku-iron kanye ne-copper-based metallurgy (igesi yokubola i-ammonia);

3) Umkhathi ongenalutho noma ongathathi hlangothi: Ar, He, N2, Vacuum;

I-4) Umkhathi we-Carburizing: uqukethe izingxenye eziphezulu ezibangela ukubola komzimba we-sintered, njenge-CO, CH4, namagesi e-Hydrocarbon;

5) Umkhathi osusekelwe ku-nitrogen: Ngokuqukethwe okuphezulu kwe-nitrogen emkhathini we-sintering: 10% H2+N2.

I-Reforming Gas:

Ukusebenzisa igesi ye-hydrocarbon(igesi yemvelo, igesi ye-petroleum, igesi ye-coke oven) njengezinto zokusetshenziswa, kusetshenziswa umoya noma umhwamuko wamanzi ukusabela ezingeni lokushisa eliphezulu, kanye nomphumela we-H2, CO, CO2, kanye ne-N2.I-aont encane yegesi exutshiwe ye-CH4 ne-H2O.

I-Exothermic Gas:

Lapho ulungiselela igesi eshintshayo, igesi yezinto ezingavuthiwe nomoya kudlula kusiguquli ngengxenye ethile.Uma isilinganiso somoya negesi yempahla eluhlaza siphezulu, ukushisa okukhishwe ngesikhathi sokusabela kwanele ukugcina izinga lokushisa lokusabela lesiguquli, ngaphandle kwesidingo sangaphandle kokushisisa kwe-reactor, igesi yokuguqulwa ewumphumela.

I-Endothermic Gas:

Lapho ulungiselela igesi eguquliwe, uma isilinganiso somoya negesi eluhlaza siphansi, ukushisa okukhishwe ngesikhathi sokusabela akwanele ukugcina izinga lokushisa lokusabela kwe-reformer, futhi i-reactor idinga ukuhlinzekwa ngokushisa okuvela ngaphandle.Igesi eshintshiwe ewumphumela ibizwa ngokuthi i-Endothermic Gas.

II-Atmosphere Carbon Potentialokuqukethwe kwekhabhoni ehlobene emkhathini, okulingana nekhabhoni equkethwe endabeni lapho umkhathi kanye nokokusebenza kwe-sintered ngekhabhoni ethile kufinyelela ukulingana kokusabela (akukho carburization, akukho decarburization) ezingeni lokushisa elithile.

Futhi iI-Controllable Carbon Potential Atmosphereyigama elijwayelekile lendawo yegesi elungisiwe eyethulwa ohlelweni lwe-sintering ukulawula noma ukulungisa okuqukethwe kwekhabhoni yensimbi ene-sintered.

Okhiye bokulawula inani le-CO2 ne-H2Oemkhathini:

1) Ukulawulwa kwephoyinti lenani lamazolo e-H2O

I-Dew Point: Izinga lokushisa lapho umhwamuko wamanzi osemkhathini uqala ukuminyana ube yinkungu ngaphansi kokucindezela okujwayelekile komkhathi.Uma kukhona amanzi amaningi emkhathini, kulapho amazolo ekhuphuka khona.Iphuzu lamazolo lingalinganiswa imitha yephoyinti lamazolo: isilinganiso sokumuncwa kwamanzi kusetshenziswa i-LiCI.

2)Lawula inani le-CO2 futhi likalwe nge-infrared absorption analyzer.